diff --git a/core/libs/prx/libSceAgcDriver/CMakeLists.txt b/core/libs/prx/libSceAgcDriver/CMakeLists.txt
index b44f02b4f..5fabdd22e 100644
--- a/core/libs/prx/libSceAgcDriver/CMakeLists.txt
+++ b/core/libs/prx/libSceAgcDriver/CMakeLists.txt
@@ -613,6 +613,7 @@ if(BUILD_TESTING)
                 "PATH=path_list_prepend:$<TARGET_FILE_DIR:libc>")
         endif()
     endforeach()
+    set_tests_properties(agc_driver_flat_store PROPERTIES RUN_SERIAL TRUE)
     add_test(NAME agc_driver_pm4_failure COMMAND agc_driver_pm4_tests failure)
     set_tests_properties(agc_driver_pm4_failure PROPERTIES ENVIRONMENT "ANYPS5_NO_SHADER_CACHE=1" SKIP_RETURN_CODE 77)
     if(WIN32)